The enemy within (by Carl Jung)

The acceptance of oneself is the essence of the whole moral problem and the epitome of a whole outlook on life. That I feed the hungry, that I forgive an insult, that I love my enemy in the name of Christ - all these are undoubtedly great virtues. What I do unto the least of my brethren, that I do unto Christ.

But what if I should discover that the least among them all, the poorest of all beggars, the most impudent of all the offenders, the very enemy himself - that these are within me, and that I myself stand in need of the alms of my own kindness - that I myself am the enemy who must be loved - what then? As a rule, the Christian's attitude is then reversed: there is no longer any question of love or long suffering; we say to the brother within us "Raca," and condemn and rage against ourselves. We hide it from the world; we refuse to admit ever having met this least among the lowly in ourselves.

Judas could not face his shadow; Peter could. The latter befriended the imposter within; the former raged against him (Brennan Manning).